LBZ: 911: Need Help ASAP!

[Dirtymaxx07]

Ok, my buddy just put a new built motor in his truck. Got it all together and went to start, and it wont. Went back over everything(grounds, plugs, ext.) checked fuel pressure, crank signal, cam sensor, everything you can possibly think of. Still no start. We checked to see if the injectors are firing and we have no pulse.... and thats where we are stuck at!?! any help would be greatly appreciated! or what we need to look at next? we are just stuck at this point.

 

[Yellow Jacket]

Is it building rail pressure when cranking? How much?

 

[Burn Down]

Sounds like VATS. Do you have a lock flash on while cranking in the upper left corner of the gauge cluster?

 

[Dirtymaxx07]

all the FRP stuff im looking at are coming up. The actual and desired FRP are the same(well actual is showing a little more while cranking the truck over). On my solus pro scan tool i dont what numbers i actally need to be looking at... i went out and hooked it up to my truck and everything shows the same, as his truck. ive been kinda going back and forth on the trucks

i will look and see if the lock light is on. i have not noticed it since ive been messing with it.

 

[Dirtymaxx07]

No security light on while cranking the truck..

 

[Chevy1925]

year and motor would be helpful

 

[Dirtymaxx07]

Sorry it's a 06 lbz

 

[chevyburnout1]

No codes setting in the ECM or BCM after cranking on it for 30 seconds? (15 second intervals)

 

[chevyburnout1]

Also does the scanner show engine rpm's when cranking?

 

[Dirtymaxx07]

Yes it does, and its turning over at 140-150rpm. There are no codes either. Ended up flashing my computer back to stock and putting it on his truck(thinking maybe a pcm problem) still nothing .

 

[RPM Motorsports]

You sure he has LbZ cam and crank sensors in it? 8973650380

 

[Dirtymaxx07]

Thought that might have been a problem, so we swapped the sensors that came out of his truck originally back in to it.(Motor had sensors in it when we got it back) Both cam and crank sensors are recognized on the scan tool.

 

[chevyburnout1]

I'm not sure if this would set a code or not, but once after I did injectors on my truck it wouldn't start. Showed cranking rpms and fuel pressure. Turns out I forgot to plug in the EDU relay lol.

 

[Dirtymaxx07]

Well everything is plugged in, we have gone over the simple stuff 3-4 times. Checked all fuses multiple times. Even check all the power and grounds coming from and going to the computer. We just have no pulse to the injectors ... We have pretty much ran out of ideas. The only other thing that worries me is the main injection timing in the scan tool shows -60 degrees now. Don't know if that could be a problem or not.

 

[catman3126]

you getting any kind of smoke at all from the tail pipe? i'm guessing not but thought id ask.

 

[Dirtymaxx07]

Nope, no smoke.